{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "48870",
    "entityType": "User",
    "nonce": "0x8164bb5656f5fbf27306d778d071b793f2c57c6ad4f405e51b494e43c9e658d3",
    "signature": "0xe17324587f24a23abf413c1c567f49602187daef0b61480bd75eb4626240263a0d5b892ce6d79665ffc454b5c5b93e2986f4c2b701eef224ae7f70cf59e0c73b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}